KR200336717Y1 - A driving mechanism for open and close hot plate in automatic press - Google Patents

Abstract

The present invention relates to a press hotplate switchgear which has been improved to increase productivity by continuously maintaining heat applied to the upper mold in the structure of the hotplate switchgear of a vacuum forming press mainly used for molding silicone or rubber products. will be.

Press hot plate opening and closing device of the present invention is configured as a heating plate with a heater built in the upper rotating plate 322 before the heating process in the heat repeating process as in the press device that the heater built-in hot plate is configured separately from the upper rotating plate before Since it is not necessary to consider the process time can be shortened to increase the productivity yield, and also used as the heat insulating plate by giving a step by the guide step 372a to the guide roller 286 guided portions on both sides of the auxiliary plate 372 The upper rotary plate 322 is in close contact with the auxiliary plate 372 without friction to prevent damage to the upper rotary plate 322 in which the heater is built to lower the failure rate.

Description

A driving mechanism for open and close hot plate in automatic press}

The present invention relates to a hot plate switchgear of the press, and more specifically, in the structure of the hot plate switchgear of the vacuum forming press mainly used for the molding of silicone or rubber products to maintain the heat applied to the upper mold The hot plate switchgear of the press improved to increase the productivity.

In general, rubber molding products such as food or water packings, keyboard pads, and silicone injection molding products are used in many places. Therefore, vacuum molding presses are automatically used to mass produce such molded products in a short time.

The presses used for molding silicone or rubber products vary depending on the molding type and operation method, such as injection molding method, direct pressure type, hot plate opening type, automatic drawing method, ejector method, and two-stage molding type.

Vacuum molding presses, which are mainly used for molding rubber or silicone products such as keypads, have been adopted in which the upper mold is opened and closed and the lower mold is moved back and forth, and the lower mold attached to the lower plate is placed in front of the operator. It moves forward so that molded products can be taken out from the lower mold.

Conventionally, the utility model filed by the present inventors has been designed to have an efficient hotplate opening and closing structure by opening and closing the upper and lower molds by only moving forward and backward of the lower mold without separately operating the upper and lower molds mounted on the press. Registration No. 188831 and Utility Model Registration No. 295047 are disclosed.

Of these, the latter is to improve the disadvantages of the former, the structure is simple and robust, to prevent the malfunction of falling of the upper rotating plate, and there is almost no failure rate to prevent worker safety and mold damage.

Also in the press switchgear having such a structure had a disadvantage to be improved as follows.

Hereinafter, the disadvantages of the conventional press opening and closing device will be described.

1 and 2, the front and rear actuating actuator 232 for moving back and forth the lower plate 242 with the lower die 244 attached to the upper, and the upper end of the lower plate and the lower end of the lower plate 242 Hinge coupled to the rear end of the upper rotary plate 222 attached to (224), the 'L' shaped coupling member 262 and the upper rotary plate (S) formed with a sliding groove (262a) so that the hinge shaft 228 is vertically slid; A pair of left and right link members coupled to both ends of the front end portion 222 and provided with at least one guide roller 286 guided along the side surface of the upper heat plate 272 fixed to the lower end portion of the upper body 200a of the press ( 282, and the upper portion of the body is composed of a fixed arm (256) fastened to the press upper body (200a), one or more fixed rollers (287) are provided on the outer surface of the pair of link members (282), respectively The semicircular guide jaw 258 is formed at the lower end of the fixed arm 256 along an inner edge thereof. The mounting plate 257 is mounted, and the fixed roller 287 is guided along the inside of the guide jaw 258 as the front plate 242 moves forward to open the upper die 224. .

Since the structure of the heat transfer plate 272 is transmitted to the upper mold 224 receives the heat of the upper plate 272, the upper rotary plate 222, the upper plate 222, the upper plate 272 ) Is spaced apart from each other and heat transfer is cut off, and thus, the upper rotating plate 222 and the upper heating plate 272 must be kept in contact with each other for a long time as the upper mold 224 cannot be heated. Therefore, the work time was extended.

The present invention devised to solve the above-mentioned problems is an object of the present invention to provide a hot plate opening and closing device of the press to increase the productivity by continuously maintaining the heat applied to the upper mold.

1 is a front perspective view of a general press to which the present invention is applied

Figure 2 is a side view of the conventional press hot plate opening and closing device compared with the present invention

3 to 6 are side views showing the opening and closing process of the press hot plate opening and closing device according to the present invention in sequence

Explanation of symbols on the main parts of the drawings

200a: upper body 224: upper mold

228: hinge axis 232: actuator

242: lower plate 244: lower mold

256: fixed arm 257: locking plate

258: guide jaw 262: coupling member

262a: sliding groove 282: link member

286: guide roller 287: fixed roller

322: upper rotating plate 372: auxiliary plate

372a: Guide step

With reference to the accompanying drawings, the present invention for achieving the above-mentioned conventional objects will be described in detail. The same parts as in the prior art will be given the same provisions in order to help understanding for the technical contrast of the prior art and the present invention.

Referring to Figure 1 showing the press device to which the present invention is applied, and Figures 3 to 6 showing the driving process of the hot plate opening and closing device, the condition of the technical configuration of the press hot plate opening and closing device of the present invention, the upper die 244 Hinge front and rear actuating actuator 232 for moving the lower plate 242 attached to the front and rear, and the rear end of the upper rotary plate 322 with the upper die 224 attached to the rear end and lower portion of the lower plate 242. It is coupled to the 'L' shaped coupling member 262 and the sliding groove 262a is formed so that the hinge shaft 228 is slid up and down, and is coupled to both sides of the front end of the upper rotating plate 322, the press upper body 200a At least one guide roller 286 guided along the lower side of the lower portion is provided with a pair of left and right link members 282, and the upper portion of the body consists of a fixed arm 256 fastened to the press upper body (200a) The outer surface of the pair of link members 282, respectively At least two fixed rollers 287 are installed, and a lower end of the fixed arm 256 is mounted with a locking plate 257 having a semi-circular guide jaw 258 formed along an inner edge thereof to move the lower plate 242 forward. According to the premise that the fixed roller 287 is guided along the inner side of the guide jaw 258 to open the upper mold 224.

3 to 6, when the upper mold 224 is opened according to the forward movement of the lower plate 242 at the lower end of the press upper body 200a under the premise of the above-described configuration. When the upper mold 224 is closed by spaced apart from the upper rotating plate 322 and the lower plate 242 is moved backward, the auxiliary plate 372 is provided to be in close contact with the upper rotating plate 322, the upper rotating plate 322 has a heater mounted therein and is characterized in that it is implemented as an upper heating plate electrically wired from the lower plate 242 to the heater.

Although the heater inside the upper rotating plate 322 is not shown in the drawing, the heater rods may be disposed in the vertical direction or the vertical direction and may be electrically wired. The electrical connection of the heater may include the rear surface of the upper rotating plate 322 and the lower heating plate 242. The elbows 384 provided at the rear of the < RTI ID = 0.0 >) < / RTI > The elbow 384 is a means for preventing disconnection by the repetitive flow of the electrical wiring 382.

The present invention configured as described above acts as an upper heating plate in which the upper rotating plate 322 directly generates heat, and the upper rotating plate 322 is spaced apart from the auxiliary plate 372 as shown in FIGS. 3 to 4 even when the upper rotating plate ( Since the heat of 322 is not cooled, it is possible to continuously apply heat to the upper mold, thereby reducing the overall process time by eliminating the waiting time for heating as compared with the conventional press opening / closing drive in a continuous press process.

In addition, according to another feature of the present invention, the guide step (372a) to guide the guide roller 286 is formed on both sides of the auxiliary plate 372 is the auxiliary plate 372 and the upper plate rotating plate 322 And have a play that is spaced in contact with.

In this configuration, when the upper rotary plate 322 in the open state retreats backward and closes, the auxiliary plate 372 and the upper rotary plate 322 retreat to the spaced apart state, and then the auxiliary plate 372 and the upper rotary plate at the point where the retraction is almost completed. Since 322 is in close contact, wear and noise due to mechanical friction can be prevented.

As described above, according to the present invention, since the upper rotating plate 322 is configured as a hot plate with a built-in heater, the present invention does not have to consider the same heating waiting time as in the previous repeated press process, thereby shortening the process time and increasing the productivity yield. In addition, by giving a step by the guide step 372a on the part where the guide roller 286 is guided on both sides of the auxiliary plate, the upper rotary plate 322 used as the heat plate is in close contact with the auxiliary plate 372 without friction. It is possible to lower the failure rate by preventing the damage of the built-in upper rotary plate 322 and the effect of preventing friction noise.

Claims (3)

Front and rear actuating actuator 232 for moving the lower plate 242 with the lower die 244 attached to the upper and lower sides, and an upper rotary plate having the upper die 224 attached to the rear end and the lower portion of the lower plate 242 ( 322 is hinged to the rear end, and the 'L' shaped coupling member 262, the sliding groove 262a is formed so that the hinge shaft 228 is slid up and down, and is coupled to both ends of the upper rotating plate 322, A pair of link members 282 having an inner side of at least one guide roller 286 guided along the lower side of the press upper body 200a, and a fixed arm having an upper portion of the body fastened to the press upper body 200a. Consisting of (256), one or more fixed rollers (287) are provided on the outer surface of the pair of link members (282), respectively, and the lower end of the fixed arm (256) along the inner edge of the semicircular guide jaw ( 258 is attached to the mounting plate 257, the front of the lower plate 242 In the press according to the soleplate opening and closing device the fixing roller 287 is guided along the inner side of the guide jaw 258 to open the upper mold 224, At the lower end of the press upper body 200a, when the upper mold 224 is opened according to the forward movement of the lower plate 242, the upper die plate 224 is spaced apart from the upper rotary plate 322 and is moved to the rear side of the lower plate 242. Accordingly, when the upper mold 224 is closed, an auxiliary plate 372 which is in close contact with the upper rotating plate 322 is installed, and the upper rotating plate 322 is equipped with a heater therein, and the lower heating plate 242 is disposed from the side. Press hot plate opening and closing device, characterized in that implemented as a heating plate electrically wired by a heater built in the upper rotating plate (322). According to claim 1, wherein both sides of the auxiliary plate 372 is formed with a guide step 372a for guiding the guide roller 286 is spaced apart from the auxiliary plate 372 and the upper rotating plate 322 which is the heat insulating plate. Press hot plate opening and closing device characterized in that configured to have a play. In the conventional press hot plate opening and closing device configured to the front rotation plate 322 attached to the upper die of the lower die attached to the lower plate 242, the front opening and closing operation, The lower plate of the upper body 200a of the press is spaced apart from the upper rotating plate 322 when the upper rotating plate 322 is opened and the auxiliary plate which is in close contact with the upper rotating plate 322 when the upper rotating plate 322 is closed ( 372 is provided, and the upper rotary plate 322 is equipped with a heater therein, and the lower heating plate 242 is characterized in that it is implemented as an upper heating plate electrically wired to the heater embedded in the upper rotary plate 322. Press hotplate switchgear.